Additional investment, more school places for children with special educational needs and disabilities and a redesign of how youngsters are assessed for extra support are among the changes being planned by Hertfordshire’s education and health chiefs. The measures are included in a new “priority action and improvement plan”, drawn up in the wake of an inspection that found “systemic failings” in the county’s SEND (special educational needs and disabilities) provision. That inspection – published in November – found that too many Hertfordshire children with SEND were waiting too long for their n…